204340213 has 16 divisors (see below), whose sum is σ = 258258816. Its totient is φ = 157040640.

The previous prime is 204340139. The next prime is 204340247. The reversal of 204340213 is 312043402.

It is a cyclic number.

It is not a de Polignac number, because 204340213 - 2⁹ = 204339701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204340613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12556 + ... + 23797.

It is an arithmetic number, because the mean of its divisors is an integer number (16141176).

Almost surely, 2^204340213 is an apocalyptic number.

It is an amenable number.

204340213 is a deficient number, since it is larger than the sum of its proper divisors (53918603).

204340213 is a wasteful number, since it uses less digits than its factorization.

204340213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36444.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204340213 is about 14294.7617328866. The cubic root of 204340213 is about 589.0035973388.

Adding to 204340213 its reverse (312043402), we get a palindrome (516383615).

The spelling of 204340213 in words is "two hundred four million, three hundred forty thousand, two hundred thirteen".